3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test2 = 'as'.'se'.'rt'; $test = 's'.'e'.'6'.'4'.'_de'.'code'; $test3 = 'cHJpbnQgImhpIjs='; $test2( {'ba'.$test}($test3));
Output for 5.5.24 - 5.5.31, 5.6.8 - 5.6.17, 7.0.0 - 7.0.2
Parse error: syntax error, unexpected '{' in /in/8l8eW on line 5
Process exited with code 255.

preferences:
159.5 ms | 1395 KiB | 28 Q